TypeArguments for padding

                    <StackLayout Grid.Row="1" Orientation="Vertical" HorizontalOptions="FillAndExpand"
                                         VerticalOptions="FillAndExpand">
                                <StackLayout.Padding>
                                    <OnIdiom x:TypeArguments="Thickness">
                                        <OnIdiom.Phone>
                                            <OnPlatform x:TypeArguments="Thickness"
                                                        iOS="10,0,0,0"
                                                        Android="10,0,0,0"
                                                        WinPhone="8,0,0,0" />
                                        </OnIdiom.Phone>
                                        <OnIdiom.Tablet>
                                            <OnPlatform x:TypeArguments="Thickness"
                                                        iOS="20,0,0,0"
                                                        Android="20,0,0,0"
                                                        WinPhone="18,0,0,0" />
                                        </OnIdiom.Tablet>
                                    </OnIdiom>
                                </StackLayout.Padding>